Gtjrdon fox



6; FOX, Hot Air Furnace.

Patented 'MarCh 10. 1843.

N4 PETERS. Phnmmho her. washing. D4

UNITED srATn-s PATENT GURDON Fox, on HARTFORD, CONNECTICUT.

AIR-HEATING rnitimen.

Specification of Letters Patent No. 2,994, dated March 10, 1843.

To all whom it may concern:

Be it known that I, GURnoN Fox, of the city and county of Hartford and State of Connecticut, have invented a new and useful Improvement in Furnaces for Heating Buildings; and I do hereby declare that the following is a-full, clear, and exact description thereof, reference being had to the accompanying drawing, making a part of this specification, in which Figure 1 is a front elevation of drums; Fig. 2, a ground plan; Fig. 3, front elevation of furnace; Fig. 4:, back elevation of furnace; Fig. 5, drum and deflector detached.

The nature of my invention consists in combining a series of drums with the fire chamber, surrounded by brick work; the drums having conical deflectors as hereafter described; so as to produce a great surface of radiation, and an economic consumption of fuel.

The fire chamber (a) made of cast iron or other suitable material has a cap (1)) which fits down onto it, in the front of which there is a door (0) for supplying the fuel through. An aperture is also made in the cap at the top onto which fits the first drum of the series. The lower half of the drum (cl) is in the form of a frustum of an inverted cone, the lower part just fitting the aperture at the top of the cap (7)). Around the upper edge there is a flange, onto which the flange of the upperhalf of the drum fits. This part'is the section of a spheroid, in the top of which there is a circular aperture;-

within the drum so formed there is a conical deflector (c), Fig. 5, (this is also shown by dotted lines within the drum in its proper position.) It has around its base short projections or legs which support it, leaving a space around its base so as to allow the products of combustion, heat, &c., to pass up all around between it and the outside of the drum. The apex of the cone is situated directly under the center of the aperture in the 'top of the drum; onto this aperture a short pipe fits which connects the drum with a horizontal pipe (f) near its center.

On each side of the drum as above described are two or more placed of the same form and construction one above the other; the upper one (which is on a level with the center one) connects also with the horizontal the other is connected with the chimney flue between the center drum and the outside one, on that side there is a damper (f). When this is open the draft from the fire passes through the center drum andfrom thence directly intothe chimney; but when the damper is closed the draft passes downv through the series of drums situated at the opposite end of the pipe (f) from the damper from thence it passes through the vent pipe (g) and up throughthe drums on the other side into the upper pipe and'thence into the chimney; the heat being spread over the surface of the drums by means of the conical deflector (e). I

The apparatus as above described is inclosed by an oblong brick chamber (a plan of which is shown in Fig. 2); there is an outside wall (71.) of the thickness of a brick inside of which there is another wall leaving a space between them of about the width of a brick; these are built up to a height above the horizontal flue (f) and the top is covered in by an arched iron plate. Near the top of the brick chamber in the out-side wall there is an aperture (h) for the admission of cold air, which passes down between the two walls and through the openthe ashes &c. being dislodged by beating them on the outside; it falls down into the pipe (g) below. In this pipe there is an aperture (9') behind closed by a slide throughwhich the dirt can be withdrawn; access to this is gained by means of a door (m) Fig. 4, and also to the whole interior of the brick chamber, for the purpose of adjusting or repairing the furnace; the

front is so constructed that the door of the .drums the conical deflector constructed and arranged'in the manner above specified.

GURDON ox.

Witnesses:

J. J. GREENOUGH, CLEMENT T. Coo'rE. 

